金融词汇里面的contribution & Contribution margin 中文是指什么?

The project would have a five year life, after which the new machine would have a net residual value of RM10, 000. Because direct labor is in short supply, labor resources would have to be diverted from other work which currently earns a contribution of RM1.50 per direct labor hour.
有这么一段话,我不知道里面的contribution是指哪个科目,请高手指点
不知道或不确定的朋友就免了.谢谢
那请问这段话的最后是否说明,劳动力将被转移到其他地方(去做其他工作),当前劳动力每小时收益为1.5元呢?
PS:没想到你也是上海人呀,感觉亲切^^
contribution是收益的意思,Contribution margin的意思是边际收亮闭益。是管尘键烂理会计里的词汇。派漏